Shock-absorbing apparatus for massive wheels



Dec. 13, 1932. P. ALTUNA 1,890,442

SHOCK ABSORBING APPARATUS FOR MASSIVE WHEELS Filed Feb. 17. 1952- 2 Sheets-Sheet 1 /n #en for.'

Dec. 13, 1932. P. ALTUNA 1,890,442

SHOCK ABSORBING APPARATUS FOR MASSIVE WHEELS l FilKed Feb. 17, 1932 2 Sheets-Sheet 2 Patented Dec. 13, 1932 UNITED STATES- 'PEDRO ALTUNA, or SAN snBAsTiAN, SPAIN 'i sHocx-AissOR-BmdAPPARATns roaMAssrvE 'WHEELS -V Application inea reb'mary 17,v 1932, serial No.-593,6`17, ana in stam Januaiyaa 193:2.

sary, since, besides giving smoother running,v

it avoids the danger of burstings andpunctures, which are the cause of so many accidents.

This apparatus-is composed of a special axle, with perforations suitably distributed,

Y and whose number is not limited, through which lperforations pass a similar number of free spokes, whose forked-head extremities rest on straight sliding pieces which are parallel to-one another. v f

As the spokes are not fixed in any way,`

they slide not only through the perforations,

' 2b but also on the above-mentioned guides,-

carrying, placed between 'the axleand `the guides, spiral springs which receive the shock produced by Contact of the wheel with obstacles on the road, so that the Vrepercussionv of these shocks on the axleis avoided, as they are completely deadened.A

In order that this invention may be better understood, drawings are accompanied, in

which Fig.' l shows the complete apparatus, l p Fig. 2 kgives another view,'showing how the effect of a sudden shock is mitigated, be-

,fore it reaches the massive wheel,

Fig. 3 shows the apparatus divided in separate parts. .Y

vA is the special axle, B shows the perforations in it, C is a hollow tube, ormingpart of the spoke, D are rods with Jforked-headl extremities which, with the tube C,cornplete the spoke. united to the rods D. F is the guide on which runs the part E. G is a cylindrical hub with-grooves, into which enter the guiding parts F. H shows the `grooves of the lhub G. I is another cylindrical hub, which covers the apparatus. J shows the connecting partof the spokes of the hub I, and K indicates the spiral springs of the apparatus.

The mounting and workingof theapparatus is eected as follows: The tubes C are first passed through vthe perforations B of E. shows the forked-head part the -axle'A,x21nd,?after the springs-"Kjha-ve; Y

by means of` pressure orscrefwed to the-other hub I, they are unitedin a single body,with

no `other fixing .than what has already beenV mentioned.

Thenfwhenthisfhub `I has been united-to the corresponding wheel, the axle is couvhpled to. the'carriage forfwhich'it is intended,

andwhen its revolvingmovement commences,`

the shocklabsorbing apparatus lrevolv'eszto- 'getherwith the wheel.4

e Now, as those Ispokes are'notmfixed either to the axle A or to the runners'JF and can 'there- "fore:V slide Jfreelyv and*v independently "of i one another, both through'thev perforations B of the axle A i and over' the guidesV or i runners F,

the* result is thatwhen the tensionjof `the f o springs K'isno'rmal, the axle A remains in its central position (see JFig. but. it. moves `from this central position in/any direction` "when the lsprings K are compressedY :or i

stretched onreceivingthe effect of the con- Y tact ofthe wheel withany obstacle (see Fig. Q), so'that this ei'ect `isl mitigated before it reaches the axle A, thisbein'g the object4 ofthe presentinvention. f

. I-Iavi-ng 4fnow described my invention, what p 1. In avwheel centen'an inner-'hubhaving'a 'Y series of diametrically disposed Aopenings therein, Vspokes slidable through said open- 1 f `ings independently of each other and projecting at bothendslfroln the hub, an outer ancolnpression springs surrounding thevpro- `nular hub normally concentric to the inner' Y hub, sliding connections between the extremities of each stroke and the 'outer hub, andf jecting ends of the spokes and normally holdl ing the hub centrally on the spokes.

2. In a Wheel center, an inner hub having a Vvseries of dametrically disposed openings l 2f A I i i v1,890,442 g therein, spokes slidableY through said open- Y ings independently of each other and projecting at both ends from the hub, an Vouter Y f annular hubrnormally concentricto'the inner 5 hub, guides forming chords across the vinner peripheryof the outer spokes, forked heads f carried by theends ofthe spokes and slidable i .y

on'said guides, and vcompression` springs be, v tween said forked heads and the inner hub.r i Y v 3. Ina Wheelcentenan inner hub havingf a series of diametrically Ydisposed openings therein, spokes slidablethrough said open- Y `ings independently'of each otherfand project-YY ing lat both ends from the hub, an outer` lan- 175`1nu1a/r huh normally concentric to the inner fhnb, 2guidesv forming chordsacross thefinne'r f n peripheryrof the' outerspokesfforked 'heads Y f l'carriedvbytheendsof the spokesa'ndslidable Y onrsaidk yguides, andvcompression ysprings be- A tween said forked heads-:and the inner hub,

said spokesl having` vtubular bodies and the forked headshaving stems entering the ends Vof the tubular bodies. 1 I Y r f L, f

'4. In a Wheel center, an innerV hub having af series ofdiametrically disposed openings therein, spokes slidable through said openings i independentlyf'of eachA otherand projecting aty both ends from the hub. an outer annular Y hub normally concentric to the'inner hub,

' 50 guides forming` chords across theinner periphery of theouter spokes, forked .hea'dsfcare ried bythe ends ofthe spokes rand slidahle"v f Q on Vsaid guides, and compression springsihef tween said forked-headsand,theinner hub, v i.

said guidesl having arcuate facesv engaging. J i-f saidfouter h-uhand'theouter hub being slotted 'V Y torreceive saidfarcuate'faces. y; e

v *Y 5. In-awheel centeran innerhub having l a series of diametrically disposedopenings `40V therein, spokes'slidable through said openings independently off each other and projecting Y at both ends lfrom the'hulo, an outer annular hub normallyfcon'centric to. vtheinner hub, guides forming chords across the inner pe-fy Vripher'yv ofthe outer spokes, forked heads carried by the ends of the spokes and slid-able on j said guides, and compressionsprings betweenV 1 said :forked heads `and the inner hub, said guides Yhaving arcuate faces engaging said l outer hub Aand the outer hub being slotted to' receiYe -saidf arcuated faces, said spokes hav# ing tubular `bodies and the forkedheads-havf 5 ing stems entering the Y ends of the tubular bodiesVV i Signed at Madrid, Spainfthis 29th of January A. D; 1932. 4 A A Y i PEDRO ALTUNA. 

